n. An act involving two people pooping at once whereby the first person sits on the toilet seat and the second straddles the bowl while sitting on the first person's lap.
by Matty Scat August 13, 2006

When you take a deuce in the upper tank of the toilet. Leaving the owners to believe the toilet is broken, since the water comes out brown and pieces of fieces. This continues until someone either scoops it out of the upper tank or it dissolves.
Usually happens at mad crazy house parties or when someone mad dogs another person and allows them to use their bathroom.
by Tony April 21, 2004

When you sit on your homie’s shoulders with your nuts in his face and shit through the space in between his legs.
by lads9 September 8, 2018

Double-decker, or to pull a double-decker, is when a girl is having sex with two men, whereas one is thrusting his manhood in her ass, and the other man is penetrating her vagina. Often done to completely dominate the woman, and/or a symbol of the friendship between two men.
by Christopher Marrow May 12, 2008

a classic taco within a taco: placing a fleshlight inside a woman's vagina, then placing penis inside
I was nervous about performing in foreign territory so i requested a double decker
I never touched her, we did a double decker
I never touched her, we did a double decker
by dategrape December 11, 2010

by MyDefinitionsBeTROLLIN October 22, 2022

The double decker is a combination of the upper decker and a blumpkin. The guy is on the top tank performing an upper decker while the girl faces the wall with her feet on the toilet seat giving him a blumpkin while she drops a deuce in the bottom tank
by tnfungi January 14, 2009
